# '''
# /*
#  * @Author: wevsmy 
#  * @Date: 2017-10-22 14:08:07 
#  * @Last Modified by: wevsmy
#  * @Last Modified time: 2017-10-22 14:12:12
#  */
# '''

# import gc

# class ClassA():
#     def __init__(self):
#         print('object born,id:%s'%str(hex(id(self))))

# def f2():
#     while True:
#         c1 = ClassA()
#         c2 = ClassA()
#         c1.t = c2
#         c2.t = c1
#         del c1
#         del c2

# 把python的gc关闭
# #gc.disable()

# f2()

#coding=utf-8
import pdb 

def add3Nums(a1,a2,a3):
    result = a1+a2+a3
    return result


def get3NumsAvarage(s1,s2):
    s3 = s1 + s2 + s1
    result = 0
    result = add3Nums(s1,s2,s3)/3
    return result

if __name__ == '__main__':

    a = 11
    # pdb.set_trace() 
    b = 12
    final = get3NumsAvarage(a,b)
    print(final)